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https://issues.apache.org/jira/browse/HDFS-9942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15191460#comment-15191460
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Colin Patrick McCabe commented on HDFS-9942:
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Thanks, [~iwasakims].
> Add an HTrace span when refreshing the groups for a username
> ------------------------------------------------------------
>
> Key: HDFS-9942
> URL: https://issues.apache.org/jira/browse/HDFS-9942
> Project: Hadoop HDFS
> Issue Type: Improvement
> Affects Versions: 2.0.0-alpha
> Reporter: Colin Patrick McCabe
> Assignee: Colin Patrick McCabe
> Attachments: HDFS-9942.001.patch
>
>
> We should add an HTrace span when refreshing the groups for a username. This
> can be an expensive operation in some cases, and it's good to know if it
> delayed a request.
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